GD 421
All names: GEN# +6.10060421, RE J0151+673, RE J0151+67, TIC 402808914, 2MASS J01511028+6739312, 2EUVE J0151+67.6, Lan 165, EGGR 310, Gaia EDR3 519815360648870144, Gaia DR3 519815360648870144, EUVE J0150+67.6, UCAC4 789-005554, WD 0147+67, EUVE J0151+67.6, 2RE J0151+673, GD 421, Gaia DR2 519815360648870144, LP 52-29, RE J015109+673931, WD 0147+674, 2RXF J015111.7+673930, 2RE J015108+673934, NLTT 6125
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 51 10.67 (0.02) | 01 51 10.66 (0.03) | 01 51 10.67 | 01 51 10.28 (0.02) | 01 51 09.89 | |||||
| Declination | 67 39 31.25 (0.02) | 67 39 31.25 (0.03) | 67 39 31.25 | 67 39 31.25 (0.03) | 67 39 26.28 | |||||
| Spectral type | DA | DA | DA | DA1.6 | DA2 | |||||
| Effective temperature | [K] | 25724.0 | 31250.0 (452) | 36513.0 (784) | ||||||
| log(g) | [cgs] | 7.45 | 7.83 (0.05) | 7.91 (0.01) | ||||||
| Mass | [M☉] | 0.398 | 0.57 (0.02) | 0.612 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0153 | ||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(C/H) | ||||||||||
| log(N/H) | ||||||||||
| log(O/H) | ||||||||||
| log(Na/H) | ||||||||||
| log(Mg/H) | ||||||||||
| log(Al/H) | ||||||||||
| log(Si/H) | ||||||||||
| log(P/H) | ||||||||||
| log(S/H) | ||||||||||
| log(Sc/H) | ||||||||||
| log(Ti/H) | ||||||||||
| log(Cr/H) | ||||||||||
| log(Mn/H) | ||||||||||
| log(Fe/H) | ||||||||||
| log(Ni/H) | ||||||||||
| Parallax | [mas] | 10.02 (0.03) | 9.93 (0.04) | 10.02 | 10.02 (0.03) | |||||
| Distance | [pc] | 99.77 (0.3) | 100.73 (0.4) | 89.00 | 99.77 | 99.77 (0.3) | ||||
| Composition | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 140.4983739 (0.02) | 140.5262168 (0.06) | 140.498 (0.03) | ||||||
| Proper motion (declination) | [mas/yr] | -0.141182754 (0.03) | 0.068295235 (0.06) | -0.141 (0.03) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 14.20 (0.004) | |||||||||
| V magnitude | 14.41 (0.005) | |||||||||
| R magnitude | 14.51 (0.002) | |||||||||
| I magnitude | 14.57 (0.009) | |||||||||
| J magnitude | 15.11 (0.06) | |||||||||
| H magnitude | 15.15 (0.1) | |||||||||
| K magnitude | 15.33 (0.2) | |||||||||
| u magnitude | ||||||||||
| g magnitude | 14.18 (0.1) | |||||||||
| r magnitude | 14.68 (0.07) | |||||||||
| i magnitude | 14.88 (0.01) | |||||||||
| z magnitude | ||||||||||
| G magnitude | 14.41 (0.001) | 14.43 | 14.41 | 14.41 (0.003) | ||||||
| BP magnitude | 14.27 (0.001) | 14.23 | ||||||||
| RP magnitude | 14.70 (0.001) | 14.70 | ||||||||
| Pan g magnitude | 14.28 (0.009) | |||||||||
| Pan r magnitude | 14.67 (0.006) | |||||||||
| Pan i magnitude | 15.03 (0.002) | |||||||||
| Pan z magnitude | 15.31 (0.002) | |||||||||
| Pan y magnitude | 15.51 (0.01) | |||||||||
| E(B-V) | 0.005 | |||||||||
* Constant surface field
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